REPORT OF THE SECRETARY: NATIONAL MUSEUM 101 



lepidoptera in order to care for the additional specimens that have 

 become available during the year. He also completed a new arrange- 

 ment of the family Epiplemidae and did much work on the Owen 

 collection. 



In Hymenoptera R. A. Cushman expanded and rearranged some 

 of the groups and subfamilies in the Ichneumonidae. A. B. Gahan 

 undertook some rearrangement due to the addition of material. 

 C. F. W. Muesebeck arranged the Braconidae of the subfamily 

 Aphidiinae and the exotic specimens of the subfamily Microgasterinae. 

 Miss Grace A. Sandhouse completely rearranged the collections of 

 aculeates. In addition, the aculeate Hymenoptera of the old Fitch 

 collection were worked over and incorporated into the regular Museum 

 collections. The North American material of the genus Pemphrcdon 

 was identified and arranged; and the neotropical species of Try- 

 poxylon were incorporated in the collection. Many undetermined 

 Psammocharidae were sorted and grouped into genera, and the 

 North American specimens of the genus Pepsis were identified and 

 arranged. 



In orthopteroids and neuropteroids, A. N. Caudell continued 

 arrangement of the regular Museum material and made some progress 

 in worldng up the Baker Philippine material. Dr. H. E. E\v4ng 

 undertook to arrange the spider collection and sorted out and properly 

 segregated various mixed lots of material in the groups assigned to 

 him. In Hemiptera, H. G. Barber rearranged the entire Heteroptera 

 collection. He now has the true bugs in a satisfactory natural order 

 so that material is readily accessible. P. W. Oman rearranged 

 Museum material in the Homoptera, involving various United States 

 and Canadian Fulgoridae, and supervised the transfer of the extensive 

 North American Psyllidae collection to trays and partly rearranged 

 this material. He also arranged the South American species of leaf- 

 hoppers of the genus Agallia and its relatives, as well as a large part 

 of the West Indian and Central American Cicadellidae. 



The alcoholic collection in the division of marine invertebrates is 

 in excellent shape, owing chiefly to the efficient services of the laborer 

 recently assigned to the division. Temporary clerical assistance 

 made it possible to bring the cataloging of identified specimens about 

 up to date. Work on the study collection of the division of mollusks 

 has progressed steadily but slowly. Members of the zoological 

 division staff of the United States Bureau of Animal Industry gave 

 the helminthological collection its periodical overhauling. The usual 

 curatorial work was done in the collection of echinoderms. 



About 25,000 mounted phanerogams were added to the main 

 herbarium, mostly recent South American material; 33,883 mounted 

 specimens were stamped and recorded, preparatory to incorporation 

 in the collection. The segregation of type specimens of American 



